Triple-seal piston ring



April 20,1926. 1,581,484v

' H. E` DEPUTY TRIPLE SEAL PISTON RING Original Filed 00C- 19, 1922 WIT/fesses l l 15 fofwey I l M the State of new and useful Impr Piston Rings and Patented Apr. Z0, 1926.

OF LONG BEACH, WASHINGTON,

HORACE E. DEPUTY,

EARL DAVIDSON, OF PORTL OF SEATTLE, WASHINGTON.

To all Be i Application led 0 1,581,484 PATENT OFFICE.

-ASSIGNOR OF ONE-TENTH TO AND, OREGON, AND ONE-FOURTH TO FORREST I. GILL,

TRIPLE-SEAL PIsToN RING.

whom it may concern:

t known that I, HORACE E. DEPUTY, a

citizen of the United States, and a resident of Long Beach, in the county of Pacific and to the the same to a piston for bustion engines an which the piston ring wherein Vashington, have invented a overnent in Triple-Seal method of applying use in internal-comd for other purposes, of

the following is a specification.

invention relates to improvements inI I have greatly 1ncreased the area on the piston side of the asIh capement of] the ring on at the the lubricating as applied to I have in proportion inv of the ring in so far ave lessened the likelihood of the esthe compression the piston side of the same and by leakage past same time I have greatly increased upon the piston itself.

above signed the pis in steps or gra improvements in qualities of the piston ring the bearing that the same has In addition to the the ring I have dea rin wherein it is necessary to turn date the vpiston ring th piston each other I makes and piston ring have pro ton ring, groove 1n the piston proper dations 1n order to accommoereto, and when the have'been lit-ted to cured a result that possible the maintainingv of a much higher compression coeii'icient than 1s possible because of the greater area and, therethe leakage must pass in order to escape past the piston ring proper and at the same time escape past an f increased lubricated surfaces for in my design the construction maintains the oil area O in place.

To morey speci reference 1s made to t and piston rings. section through one s1 and clearly showing the piston ring grooves and the method in the Fig.

piston icallv describe my invention accompanying drawthrough the piston 2 is a partial cross de wall of the piston rings in place of construction of the same. Fig. 3 is a lan view of the detached piston ring, and ig.

4 is a side view of the joint same l ring.

ooking from th Fig. 5 is an en in the ring the e inner diameter of the larged cross section,

etober 19, 1922, serial Ne. 595,573. Renewed July 2o, 1925.

view ofthe piston ring showing one side only.

Similar numerals refer to similar parts throughout the several views- 1 is the cylinder of the ordinary type as used in internal'combustion engines and the piston and piston rings are here shown in lace in an engine cylinder of this type, though I do not wish to be limited to the use of the invention in internal combustion engines as the same may be used for other, and many purposes. 2 is the piston and 3, 3 and 4 are the piston rings in place in the piston ring grooves and 5, 6, and 7 are steps or offsets turned on the piston side face of the piston ring that are so made and spaced as to conform to similar offsets 5a, 5", and 5 turned in the piston ring groove turned in the piston. 8, 9, and 10 are grooves or oil rings turned on the outer periphery of the piston, the purpose being to collect an oil seal in the grooves and to furthery increase the compression that may be createdwithin the compression chamber of the cylinder. 11 is the cylinder head of the engine, and 12 is the spark plug of the same.

As hereinbefore noted the piston ring groove turned in the piston is made up of a series of faces which may be at right angles to each other, while I prefer to make them at right angles to each other and they are so shown in the drawings yet I do not wish to `belimited in the patent protection asked for to faces at right angles, for slight modificationsmay be made to that; and yet procure a result that would -be greatly in advance over that now generally accomplished by methods and construction most -commonly used. The faces cut on the rin must be cut to conform to the angles an distances less a pr'oper clearance as a working t to those cut upon the piston proper.

IVhile I prefer to place the rings as shown upon the drawings in Fig. 1, namely 3 and 3a are shown with the large right angle face to the periphery of the ring being on the bottom side and the osition reversed in ring 4 yet I do not wish to be limited to this arrangement, change or rearrange ferent uses and under ditions.

this combination in difdiferent working conandI may prefer to In Fig. 2 I show an oil groove 13 turned Y g ne in the piston with oii` holes M passing from the bottom of the oil groove to the interior of the piston for the passage of the accumulated oil therethrough, this to permit the oil to drain back into the crank case.

lt Will thus be seen'thatI il have created a lpiston ring Jor use .ternal combustion engi; es, and for other purposes, wherein the area o the faces of ring on piston side of the saine have been greatly increased over the practice in vogue and that l have also ii'icreased the area of the faces of' the piston ring groove a like amount for the saine reason. The ring decreases in areain a direction toward the head of the piston, resulting in a heavier lower edge thereforu When the piston moves downwardly, as a result of the explosion in the cylinder, the lower heavier and stronger end of the ring receives the greater strain and Wear, and as this edge of the ring is reinforced, the same will last a greater length oli' time and will he more etlicient in its operation.

Having thus described my invention I Wish to ineke the following claim theretor- The combination of a ring having a relatively thin section and stepped sections of ifarogressively increasing Width providing a plurality ot' intermediate annular Walls in substantially parallel relation and aplurality of concentric Walls joining the first mentioned "Walls, of a piston provided with Aa groove having Walls complementary to the Walls of the ring, the intermediately disposed Walls of the ring being adapted to coact With the complementary adjacent Walls of the gro-ove to eliminate communication between the opposite ends of the groove when fluid pressure is exerted at one end of the groove.

HORACE E. DEPUTY. 

